Preheat oven to 350°F.
Whisk eggs with milk, salt, and pepper in a large bowl.
Melt butter in a skillet over medium heat and cook eggs until mostly set but still slightly wet.
Layer half the chips on a parchment-lined baking sheet.
Top with half the eggs, cheese, and bacon.
Repeat layering with remaining chips, eggs, cheese, and bacon.
Bake for 5-7 minutes until cheese melts.
Top with fresh ingredients: tomatoes, avocado, onion, sour cream, scallions, and jalapeños.